Asphalt Emulsion Sample Clauses

Asphalt Emulsion. The emulsified asphalt shall be designated as grade PMCQS-1h. The polymer within the asphalt emulsion shall be, at the option of the Contractor, either Neoprene, SBR, EVA or SBS. Solid polymers such as EVA or SBS shall be adequately blended into the asphalt prior to emulsification. If a liquid latex such as Neoprene, SBR or similar is used, the latex shall be “co- milled” into the emulsion through the water phase during manufacturing. Each load of polymer asphaltic emulsion shall have a certificate from the asphalt emulsion manufacturer guaranteeing that either asphalt blending or “co-milling” processes were used. The certificate shall also state the percentage of the solid rubber polymer added by weight of the asphalt as well as the composition of the polymer. The addition of latex to the emulsion after emulsion manufacturing is prohibited. The polymer modified asphalt emulsion shall conform to the following specifications: Test Test Method Requirement Tests on Emulsion: Min Max Viscosity SSF @ 77° F, seconds AASHTO T 59 15 90 Settlement, 5 days, % AASHTO T 59 --- 5 Storage Stability Test, 1 day, % AASHTO T 59 --- 1.0 Distillation: Oil Distillate by Volume of Emulsion % AASHTO T 59 --- 3 Residue by Low-Temperature Vacuum Distillation, % ASTM D244. 133-137 --- 3 TEST TEST METHOD REQUIREMENT Tests on Residue Using CTM 331: Min Max Penetration, 77° F , 100 grams for 5 seconds, dmm AASHTO T 59 40 65 Solubility in Trichloroethylene, % ASTM D 2042 97.5 --- Ductility, 77° F , 5cm/min, cm (RTFO aged residue) AASHTO T 51 60 --- Ring and Ball softening Point, degree F AASHTO T 53 123 --- Polymer Content, %, Solid Polymer content based on weight of asphalt. CTM 401 3.0% --- Torsional Recovery, % CTM 332 18 --- Mineral Aggregate Slurry seal aggregate for all parking lots shall conform to ISSA Type II aggregate and shall be manufactured crushed stone such as granite, slag, limestone, chat, or other high quality aggregate, or combination thereof. To assure the material is totally crushed, 100% of the parent aggregate shall be larger than the largest stone in the gradation to be used. Aggregate Color Aggregate shall be black aggregate or aggregate that is black in color for Slurry Seal, Type II. Black aggregate shall in all other respects comply with the requirements of this scope. When tested in accordance to AASHTO T 27 (ASTM C1360 and AASHTO T 11 (ASTM C117), the aggregate gradation (including the mineral filler) shall be within following bands. TYPE II SLURRY SEAL S...
Sample 1
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Asphalt Emulsion. Polymer-Modified High-Float Emulsion conforming to the requirements of Table 1. Table 1 Polymer-Modified High Float Emulsions Requirements Test HFE-100P Viscosity, Saybolt Furol at 122°F , Seconds 50+ Sieve Test, Retained on No. 20 Sieve, % 0.10- Storage Stability Rest, 1 Day, % 1- Demulsibility, 1.2 fl. oz. 0.10 N, CaCl, % 30+ Residue from Distillation Test to 400°F 65+ Oil Distillate by Volume of Emulsion, % 3- Tests on Residue from Distillation Test Penetration at 77°F , 3.5 oz., 5 s, 0.1 mm 90-150 Ductility 77°F, 2 inch/min 40+ Elastic Recovery, % 58+a Float Test @ 140°F, Seconds 1,200+ aTest in accordance with AASHTO T301 at a test temperature of 50°F. draft
Sample 1
Asphalt Emulsion. Asphalt emulsion shall be applied by a pressure distributor in a uniform, continuous spread and within the temperature range specified. The distributor’s spreading capability shall be computer controlled or calibrated to conform to the distributor manufacturer’s procedure prior to applying the emulsified asphalt. If streaking occurs, the distributor operation shall be stopped immediately until the cause is determined and corrected. Streaking is alternating, narrow, longitudinal areas of excessive and then insufficient quantities of asphalt emulsion. The quantity of asphalt emulsion per square yard may vary from the rate shown in the contract, as directed. A strip of building paper at least 3 feet in width and with a length equal to that of the spray bar of the distributor plus 1 foot shall be used at the beginning of each spread. If the distributor does not have a positive cut-off, the paper shall be used at the end of each spread. The paper shall be removed and disposed of in a satisfactory manner. The distributor shall be moving forward at proper application speed at the time the spray bar is opened. Skipped areas and deficiencies shall be corrected. Junctions of spreads shall be carefully made to assure a smooth riding surface. draft The length of spread of asphalt emulsion shall not be in excess of the area that trucks loaded with aggregate can immediately cover. The spread of asphalt emulsion shall not be more that 6 inches wider than the width covered by the chop material from the spreading device. Under no circumstances shall operations proceed so asphalt emulsion will be allowed to chill, set up, dry or otherwise impair retention of the aggregate. The distributor shall be parked so that asphalt emulsion will not drip on the surface of the traveled way.
Sample 1
Asphalt Emulsion. The emulsified asphalt shall conform to the requirements of Section 1020 of the Specifications.
Sample 1
Asphalt Emulsion. The asphalt emulsion shall meet the properties in the following table: Concentrated Asphalt Emulsion Properties Properties Specification Limits Viscosity, Saybolt Furol at 77°F (25°C) ASTM D7496 20 – 100 seconds Residue by Distillation or Evaporation ASTM D6997 or ASTM D6934 57% minimum Sieve Test ASTM D6933 0.1% maximum 24-hour Stability ASTM D6930 1% maximum 5-day Settlement Test ASTM D6930 5.0% maximum Particle Charge 1 ASTM D7402 Positive 6.5 maximum pH 1 pH may be used in lieu of the particle charge test which is sometimes inconclusive in slow setting, asphalt emulsions. The asphalt material base residue shall contain not less than 20% gilsonite, or uintaite and shall not contain any tall oil pitch or coal tar material and shall contain no less than one percent (1%) polymer. Tests on Residue from Distillation or Evaporation Properties Specification Limits Viscosity at 275°F (135°C) ASTM D4402 1750 cts maximum Solubility in 1, 1, 1 trichloroethylene ASTM D2042 97.5% minimum Penetration ASTM D5 50 dmm maximum Asphaltenes ASTM D2007 15% minimum Saturates ASTM D2007 15% maximum Polar Compounds ASTM D2007 25% minimum Aromatics ASTM D2007 15% minimum The asphalt emulsion, when diluted in the volumetric proportion of one part concentrated asphalt material to one part hot water shall have the following properties: One-to-One Dilution Emulsion Properties Properties Specification Limits In Ready-to-Apply Form, one part concentrate to one part water, by volume Viscosity, Saybolt Furol at 77°F (25°C) ASTM D7496 5 – 50 seconds Residue by Distillation or Evaporation ASTM D6997 or ASTM D6934 28.5% minimum Pumping Stability 1 Pass 1 Pumping stability is tested by pumping one pint (475 ml) of seal coat diluted one (1) part concentrate to one (1) part water, at 77°F (25°C), through a 1/4-inch (6 mm) gear pump operating 1750 rpm for 10 minutes with no significant separation or coagulation. Two-to-One Dilution Emulsion Properties Properties Specification Limits In Ready-to-Apply Form, two parts concentrate to one part water, by volume Viscosity, Saybolt Furol at 77°F (25°C) ASTM D7496 5 – 50 seconds Residue by Distillation or Evaporation ASTM D6997 or ASTM D6934 38% minimum Pumping Stability 1 Pass 1 Pumping stability is tested by pumping one pint (475 ml) of seal coat diluted one (1) part concentrate to one (1) part water, at 77°F (25°C), through a 1/4-inch (6 mm) gear pump operating 1750 rpm for 10 minutes with no significant separation or coagulation. The Contractor s...
Sample 1

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